Search results
Results from the WOW.Com Content Network
The common spangle gall on the underside of leaves and the currant gall on the male catkins or occasionally the leaves, develop as chemically induced distortions on pedunculate oak (Quercus robur), or sessile oak (Quercus petraea) trees, caused by the cynipid wasp [1] Neuroterus quercusbaccarum which has both agamic and bisexual generations.
Cynips quercusfolii, also known as the cherry gall wasp, is a gall wasp species in the genus Cynips and family Cynipidae. The species is important for the production of commercial nutgall formed on Quercus lusitanica (the gall oak). Galls are located on the underside of leaves, with the majority of galls being on the second and third veins from ...
Amphibolips confluenta, known generally as the spongy oak apple gall wasp, is a species of gall wasp in the family Cynipidae. [ 1 ] [ 2 ] Its range includes Ontario , Quebec , and much of the eastern United States .
Cynips is a genus of gall wasps in the tribe Cynipini, the oak gall wasps. One of the best known is the common oak gall wasp (Cynips quercusfolii), which induces characteristic spherical galls about two centimeters wide on the undersides of oak leaves. As of 2008, there are about 39 species in this genus. [1]
Amphibolips quercuspomiformis, also known as the apple gall wasp or live oak apple gall wasp, is a species of gall wasp. It induces galls in coast live oak and interior live oak trees. Like many gall wasps, it has two alternating generations which induce differing galls: an all-female parthenogenic generation, and a bisexual generation.
Krebs gall is caused by surface agents. Filz gall is caused by agents among surface hairs. Fold/roll gall is caused by agents within turned-over leaf blades. Pouch gall is caused by agents within a cup-like structure that occurs when opposite ends of the infected structure arch upward and form a spherical oval. Causative inside agents include:
Although nearly spherical, the galls often have a number of little flattened nodules. The rounded growths are filled with a spongy mass and a single wasp larva is located in a hard, seed-like cell in the centre. [7] The word 'marble' derives from the gall's shape, which is a marble-like rounded structure.
Leaf galls. This is a list of ... Amphibolips confluenta Spongy Oak Apple Gall Wasp; Amphibolips cookii Oak Apple Gall Wasp; ... Holopothrips tabebuiae trumpet tree;